1. Dripping faucets: This is often caused by worn or damaged washers, gaskets, or O-rings. Replacing these parts can stop the dripping.

2. Clogged drains: This can be caused by a buildup of hair, soap scum, food scraps, or other debris. Using a plunger or drain snake can help clear the blockage. Regular maintenance, such as pouring boiling water down the drain or using a natural solution of vinegar and baking soda, can prevent future clogs.

3. Running toilets: This is often caused by a faulty flapper valve or another part in the tank that needs to be replaced. Repairing or replacing these parts can fix the problem and save water.

4. Leaky pipes: Water damage to walls, floors, and ceilings can be caused by leaks in pipes. A plumber can identify the source of the leak and repair or replace the affected pipes.

5. Low water pressure: This can be caused by a variety of factors, including mineral buildup in pipes, leaky pipes, or a faulty pressure regulator. A plumber can identify the cause of low water pressure and recommend a solution.

6. Water heater issues: Water heaters can experience problems such as leaks, insufficient hot water, or no hot water at all. These issues can be caused by a variety of factors, including a malfunctioning heating element, a faulty thermostat, or a buildup of sediment in the tank. A plumber can diagnose and repair these issues.

Remember, while some DIY repairs can be done with basic tools and know-how, others may require professional assistance. It’s important not to attempt plumbing repairs beyond your skill level, as this can lead to further damage and more expensive repairs down the line.